Home / 686,810,846.40-948,045,502.72-408,351,705.63

Finding the Fourth Proportional to 686,810,846.40, 948,045,502.72 and 408,351,705.63

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Solution

The fourth proportional to 686,810,846.40, 948,045,502.72 and 408,351,705.63 is: 563,671,933.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,810,846.40 : 948,045,502.72 = 408,351,705.63 : x
  2. Step 2: Convert to fraction form
    686,810,846.40/948,045,502.72 = 408,351,705.63/x
  3. Step 3: Cross multiply
    686,810,846.40x = 948,045,502.72 × 408,351,705.63
  4. Step 4: Simplify right side
    686,810,846.40x = 387,135,998,048,521,024
  5. Step 5: Solve for x
    x = 387,135,998,048,521,024/686,810,846.40
  6. Step 6: Final answer
    x = 563,671,933.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.